Influence of activator concentration on the dosimetric properties of radiophotoluminescent glasses

Abstract

The spectral-luminescent properties of radiophotoluminescent phosphate glasses are studied in the Ag{sub 2}O concentration range 0.05-4.0 wt% and at the {gamma}-irradiation dose 10{sup 2}-10{sup 4} Gy. At the Ag{sub 2}O concentrations not over 0.1 wt%, the radiophotoluminescence spectrum consists of a broad band, whose contour is well described by Gauss` function, with a maximum at 650 nm. At Ag{sub 2}O concentrations higher than 0.1 wt%, the radiophotoluminescence spectrum is the superposition of two Gaussian bands with intensity maxima at 650 and 450 nm. The ratio of band intensities depends on the Ag{sub 2}O concentration, conditions of the heat treatment of the irradiated samples, and irradiation dose. The correlation between the concentration dependences of radio-photoluminescence spectra and those of luminescence spectra for unirradiated glasses, which are activated with silver, is revealed.